Pull tty/serial fixes from Greg KH:
 "Here are 2 tty and serial fixes for 5.0-rc2 that resolve some reported
  issues.

  The first is a simple serial driver fix for a regression that showed
  up in 5.0-rc1. The second one resolves a number of reported issues
  with the recent tty locking fixes that went into 5.0-rc1. Lots of
  people have tested the second one and say it resolves their issues.

  Both have been in linux-next with no reported issues"

* tag 'tty-5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: Don't hold ldisc lock in tty_reopen() if ldisc present
  serial: lantiq: Do not swap register read/writes

In RISC-V, the M-mode runtime firmware provide SBI calls for
debug prints. This patch adds earlycon support using RISC-V
SBI console calls. To enable it, just pass "earlycon=sbi" in
kernel parameters.

Signed-off-by: Anup Patel <anup@brainfault.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

The ltq_r32() and ltq_w32() macros use the __raw_readl() and
__raw_writel() functions which do not swap the value to little endian.
On the big endian vrx200 SoC the UART is operated in big endian IO mode,
the readl() and write() functions convert the value to little endian
first and then the driver does not work any more on this SoC.
Currently the vrx200 SoC selects the CONFIG_SWAP_IO_SPACE option,
without this option the serial driver would work, but PCI devices do not
work any more.

This patch makes the driver use the __raw_readl() and __raw_writel()
functions which do not swap the endianness. On big endian system it is
assumed that the device should be access in big endian IO mode and on a
little endian system it would be access in little endian mode.

Fixes: 89b8bd2082bb ("serial: lantiq: Use readl/writel instead of ltq_r32/ltq_w32")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: John Crispin <john@phrozen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Pull more ARM SoC updates from Olof Johansson:
 "A few updates that we merged late but are low risk for regressions for
  other platforms (and a few other straggling patches):

   - I mis-tagged the 'drivers' branch, and missed 3 patches. Merged in
     here. They're for a driver for the PL353 SRAM controller and a
     build fix for the qualcomm scm driver.

   - A new platform, RDA Micro RDA8810PL (Cortex-A5 w/ integrated
     Vivante GPU, 256MB RAM, Wifi). This includes some acked
     platform-specific drivers (serial, etc). This also include DTs for
     two boards with this SoC, OrangePi 2G and OrangePi i86.

   - i.MX8 is another new platform (NXP, 4x Cortex-A53 + Cortex-M4, 4K
     video playback offload). This is the first i.MX 64-bit SoC.

   - Some minor updates to Samsung boards (adding a few peripherals in
     DTs).

   - Small rework for SMP bootup on STi platforms.

   - A couple of TEE driver fixes.

   - A couple of new config options (bcm2835 thermal, Uniphier MDMAC)
     enabled in defconfigs"

* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (27 commits)
  ARM: multi_v7_defconfig: enable CONFIG_UNIPHIER_MDMAC
  arm64: defconfig: Re-enable bcm2835-thermal driver
  MAINTAINERS: Add entry for RDA Micro SoC architecture
  tty: serial: Add RDA8810PL UART driver
  ARM: dts: rda8810pl: Add interrupt support for UART
  dt-bindings: serial: Document RDA Micro UART
  ARM: dts: rda8810pl: Add timer support
  ARM: dts: Add devicetree for OrangePi i96 board
  ARM: dts: Add devicetree for OrangePi 2G IoT board
  ARM: dts: Add devicetree for RDA8810PL SoC
  ARM: Prepare RDA8810PL SoC
  dt-bindings: arm: Document RDA8810PL and reference boards
  dt-bindings: Add RDA Micro vendor prefix
  ARM: sti: remove pen_release and boot_lock
  arm64: dts: exynos: Add Bluetooth chip to TM2(e) boards
  arm64: dts: imx8mq-evk: enable watchdog
  arm64: dts: imx8mq: add watchdog devices
  MAINTAINERS: add i.MX8 DT path to i.MX architecture
  arm64: add support for i.MX8M EVK board
  arm64: add basic DTS for i.MX8MQ
  ...

Add UART driver for RDA Micro RDA8810PL SoC.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>

Pull tty/serial driver updates from Greg KH:
 "Here is the large TTY/Serial driver set of patches for 4.21-rc1.

  A number of small serial driver changes along with some good tty core
  fixes for long-reported issues with locking. There is also a new
  console font added to the tree, for high-res screens, so that should
  be helpful for many.

  The last patch in the series is a revert of an older one in the tree,
  it came late but it resolves a reported issue that linux-next was
  having for some people.

  Full details are in the shortlog, and all of these, with the exception
  of the revert, have been in linux-next for a while with no reported
  issues"

* tag 'tty-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (85 commits)
  Revert "serial: 8250: Default SERIAL_OF_PLATFORM to SERIAL_8250"
  serial: sccnxp: Allow to use non-standard baud rates
  serial: sccnxp: Adds a delay between sequential read/write cycles
  tty: serial: qcom_geni_serial: Fix UART hang
  tty: serial: qcom_geni_serial: Fix wrap around of TX buffer
  serial: max310x: Fix tx_empty() callback
  dt-bindings: serial: sh-sci: Document r8a774c0 bindings
  dt-bindings: serial: sh-sci: Document r8a774a1 bindings
  Fonts: New Terminus large console font
  dt-bindings: serial: lpuart: add imx8qxp compatible string
  serial: uartps: Fix interrupt mask issue to handle the RX interrupts properly
  serial: uartps: Fix error path when alloc failed
  serial: uartps: Check if the device is a console
  serial: uartps: Add the device_init_wakeup
  tty: serial: samsung: Increase maximum baudrate
  tty: serial: samsung: Properly set flags in autoCTS mode
  tty: Use of_node_name_{eq,prefix} for node name comparisons
  tty/serial: do not free trasnmit buffer page under port lock
  serial: 8250: Rate limit serial port rx interrupts during input overruns
  dt-bindings: serial: 8250: Add rate limit for serial port input overruns
  ...

This reverts commit 6d11023c345e369bcb9d5a68b271764e362c1f6e.

It causes issues with Guenter's test systems and since there seems to
not be any agreement about _why_ this is a problem, but reverting it
fixes things, let's revert until the root cause is found.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Pull sparc fixes from David Miller:
 "Just some small fixes here and there, and a refcount leak in a serial
  driver, nothing serious"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  serial/sunsu: fix refcount leak
  sparc: Set "ARCH: sunxx" information on the same line
  sparc: vdso: Drop implicit common-page-size linker flag

The function of_find_node_by_path() acquires a reference to the node
returned by it and that reference needs to be dropped by its caller.

su_get_type() doesn't do that. The match node are used as an identifier
to compare against the current node, so we can directly drop the refcount
after getting the node from the path as it is not used as pointer.

Fix this by use a single variable and drop the refcount right after
of_find_node_by_path().

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch adds support for the use of non-standard baud rates.
For these purposes, we use the built-in timer/counter.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>